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Showing results 1 to 12 of 12
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Latent Prints
Source Institutions
In this activity, learners examine fingerprints. Learners leave a hidden print on a surface and then make their own print detecting powder from graphite (found in pencils).
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Odors Aloft
Source Institutions
Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-686.png?itok=leZY1XKB)
DNA Extraction
Source Institutions
Learners use a simple process to extract DNA from strawberries.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-687.png?itok=O0IUam7r)
Bend a Carrot
Source Institutions
In this activity, learners investigate the process of osmosis by adding salt to a sealed bag of raw carrots and comparing it to a control.
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Disappearing Statues
Source Institutions
In this activity (on page 8), learners model how marble statues and buildings are affected by acid rain.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-688.jpg?itok=28Wj8pQS)
Inner Space
Source Institutions
In this activity, learners discover that there is space between molecules even in a cup "full" of water. They first fill a cup with marbles, and then add sand to fill the gaps between the marbles.
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pH Scale
Source Institutions
In this online interactive simulation, learners will test the pH of liquids like coffee, spit, and soap to determine whether each is acidic, basic, or neutral.
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Polishing Pennies
Source Institutions
In this experiment, learners try different liquids to see which ones clean pennies best. Liquids to try include water, lemon juice, cola, vinegar, and dishwashing detergent.
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Matter of Degree
Source Institutions
In two separate bags, learners mix water with Epsom salts and detergent.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-387.png?itok=9A9u3cJh)
Reaction: Yes or No?
Source Institutions
In this activity, learners mix ingredients in a plastic bag, and then identify three characteristics of a chemical reaction: production of heat, color change, and production of a gas.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-613.png?itok=BINkxQBY)
Pop Rockets
Source Institutions
In this activity, learners make film canister rocket ships. A fin pattern is glued onto the outside of the canister, and fuel (water and half an antacid tablet) is mixed inside the canister.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-313.jpg?itok=F52J4qgd)
Sticky Situation
Source Institutions
In this activity, learners separate the protein from milk and and use it to make their own glue.